@book{133545,
	author = {Perisic, B.J. and Pancevo Petroleum Refinery (Yugoslavia) and World Petroleum Congress (16th. : 2000 jun. 11-15 : Calgary, Alberta, Canada) and Perisic, D.B. and Pancevo Petroleum Refinery (Yugoslavia)},
	title = {Determining the efficiency and effectiveness of an oil refinery}
}